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(No Model.)

0. H. WINCHESTER.

CAN OPENER,

/ i r CX X) .Wwohfll ;i/f?e;;es Inventor G 44 [71 Attorney THE HumanmnoaruP-mum con-Pup. wnaaminm. u. c.

UNITED STATES PATENT EEioE,

CLEMENT H, W'INOHESTER, OF HAMILTON, OHIO, ASSIGNOR TO BENJAMIN F.

F. BRODT, OF SAME PLACE.

CAN-OPENER.

SPECIFICATION forming part of Letters Patent No. 515,983, dated March 6,1894. Applicationfiled July 10. 1893. Serialllo. 480,089, (No model.)

tical section of the cutter-carrying part thereof; Fig. 3, a perspectiveview of the toolhiock; and Fig. 4, a plan of the chuck.

In the drawings:1, indicates the base plate of the machine: 2, aradially slotted disk centrally pivoted on the upper surface of thebase-plate: 3, eccentric slots in the baseplate, one for each of theradial slots of the disk: 4 a handle on the disk by means of which thedisk may be turned upon its pivot: 5, chuck-jaws fitted for radialsliding motion in the disk and having each a stud projecting down intothe appropriate slot of the baseplate, whereby when the disk ispartially rotated the chuck-jaws are forced to and from the center ofthe disk, the construction thus far described forming a chuck adapted tofirmly grasp the base of the can to be opened: 6, a standard rising fromthe base-plate: 7, a bearing supported by the standard with its axiscoincident with the axis of the chuck: 8-, a hollow spindle fitted toturn and slide in the hearing 7: 9, a handle on the upper end of thehollow spindle for raising the spindle and its attachments: 10, an openbottom conical spider fixed upon the lower end of the spindle 8, theinterior dimensions of this spider being such that it may engage andrest upon the upper periphery of the various sizes of cans to be dealtwith g 11, a focally disposed guide-way formed in one of the legs of thespider: 12, a tool-block arranged to slide tocally freely in thisguide-way: 13, a tool fitted to slide in and out through the tool-blockin 'a direction substantially at right angles to the focal plane of theguide-way in which the tool-block slides: 14, the spear-shaped cuttingpoint of the tool, projecting from the guide-block into the interior ofthe sp der: 15, a spring arranged around the tool, within thetool-block, and engaging a shoulder on the tool and a shoulder in thetool-block, this spring tending to press the tool-outwardly from thespider so that the point of the tool will project but a trifle withinthe spider: 16, a slotted latch -spring secured to the tool-block andengaging a pin projecting outwardly from the tool through a slot in thetool-block and through a slot in'the latch spring, whereby the latchspring limits the outward motion of the tool in the tool-block: 17, acushion spring upon the hollow spindle Sbetween the bearing '7 andhandle 9 and serving to prevent the structure carried by the spindlefrom dropping hard down upon the chuck: 18, a rod extending axiallyloosely from the spider up into the hollow spindle 8 and having itslower end somewhat below the point of the cutting tool when the tool s1n idle position, this rod having also a horizontal arm projectingoutwardly loosely through a hole in the tool-block: 19, the studspreviously referred to as projecting from the chuck jaws into the slotsof the base-plate: and 20, a handle on the spider structure by means ofwhich the spider may be turned upon its axis.

"he operation of the device is as follows:- The chuck being opened, andthe spiderstructure elevated by means of the handle 9, the can to beopened is set within the chuck and firmly clamped and thespider-structure is lowered to engage the top of the can. As the spidergoes down upon the top of the can the lower end of rod 18 engages thetop of the can and is pushed upward, carrying the tool-block and toolwith it so that whatever the diameter of the can the point ot the toolwill be supported a short distance above the top of the can. This rod isnot essential as the periphery at the top of the-can may itself engagethe inwardly projecting portion of the tool'block and elevate it to theproper height, but the rod arrangementis much pref erable as it avoidsthe necessity for care in adjusting the spider upon the can. The canwill thus be fixed in the chuck and the spider will rest upon it withthe point of the tool near the top of the can inwardly beyond the rim ofthe can. The tool is then thrust inwardly, causing its point topenetrate the can. Handle 20 is now to be operated, thus turning thespider upon the top of the can and causing the tool to describealmostacomplete circle, interrupted only by the standard 6, thus'cuttingthe top of the can almost entirely free. The can being removed its topmay be turned up to open the can, the uncut portion acting as the hinge.

By releasing the latch spring 16 the tool may be withdrawn from thetool-block and its point readily sharpened.

' I claim as my invention 1. In a can opening machine, the combination,substantially as set forth, of a chuck adapted to receive and clamp acan, a conical spider mounted on a spindle with its axis 00- incidentwith the axis of the chuck and arranged for rotary and endwise motion, atoolblock fitted to slide in the spider, and a tool carried by said toolblock.

2. In a can opening machine, the combination, substantially as setforth, of a chuck adapted to receive and clamp a can, a conical spidermounted on a spindle with its axis in line with the axis of the chuckand arranged for rotary and endwise motion, a tool-block carried by thespider and fitted for sliding motion in the spider, and a tool carriedby the tool-block and fitted for sliding motion therein.

3. In a can opening machine, the combination, substantially as setforth,'of means for holding the can, a conical spider mounted on aspindle with its axis in line with the axis of the chuck and arrangedfor rotary and 'end- I wise motion, a tool-block arranged to slide inthe spider, a tool carried by the tool-block and having its cuttingpoint projecting within the spider, and a rod engaging the toolblock andpresenting a portion downwardly within the spider at about the level ofthe point of the tool.

4. In a can opening machine, the combina-' 7 tion, substantially as setforth,with the chuck,

spider, and sliding tool-block, of a tool fitted V for endwise motion inthe tool-block, a spring tending to press the tool outwardly, and alatch spring upon the tool-block to limit the outward motion of the tooltherein.

5. In a can opening machine, the combination, substantially as setforth, with the chuck, conical spider, the spindle which carries thespider, the tool-blocks sliding in the spider and the tool carried bythe tool-block, of a rod fitted loosely within the spindle andpresenting, a portion centrally within the spider and having anoutwardly projecting arm loosely engaging the tool-block.

6. In a can opening machine, the combination, substantially as setforth, with the conical spider, its spindle, the tool-block fitted toslide in the spideigaud the tool carried by the tool-block, of abase-plate provided with eccentric slots, a radiallyslotted disk mountedon the base-plate with its pivot in line with the axis of the spider,and chuck-jaws fitted to slide in the slots of the disk and having studsprojecting into the slots of the baseplate.

CLEMENT H. WINCHESTER. WVitnesses:

J. W. SEE,

E. A. BELDEN.

